Hygiene Trivia
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94 free Hygiene trivia questions with answers — science & nature quiz, new questions added Oct 2026.
42 free Hygiene trivia questions with answers. Hygiene trivia is a lot more entertaining than a health class. These 94 questions cover the inventions and the inventors: soap in ancient Babylon, the Chinese hog-bristle toothbrush, the prisoner who mass-produced toothbrushes in England, the lead toothpaste tube, dental floss, Q-tips, the first deodorant and antiperspirant, roll toilet paper, the safety razor, the flush toilet Queen Elizabeth I tried and the bidet named after a pony. It also covers the medicine: why Ignaz Semmelweis was mocked for telling doctors to wash their hands, John Snow and the Broad Street pump, Joseph Lister's carbolic acid, Florence Nightingale's charts, London's sewers after the Great Stink, fluoridated water, and how many seconds the WHO wants you to scrub. Plus the marketing that changed habits, from Ivory soap that floats to the mouthwash that turned an obscure medical word into a national fear. Every answer is checked against a documented source, so it works for a school health unit, a nurses' quiz night or anyone who likes knowing where everyday things came from.
30 of 94 questions with answers and explanations. Play the quiz
Q 01Hygieia, the Greek goddess of health, was usually called the daughter of which god of medicine?
Asclepius
Asclepius and Hygieia were worshipped in the same healing temples; her name shares a root with 'hygiene', and her sister Panacea's still means a cure-all.
Q 02The US CDC recommends scrubbing your hands with soap for at least how long?
20 seconds
20 seconds is about the time it takes to hum 'Happy Birthday' twice; the scrubbing is what counts, so the water can be warm or cold.
Q 03Who introduced chlorinated-lime hand disinfection in Vienna's First Obstetrical Clinic in 1847?
Ignaz Semmelweis
Ignaz Semmelweis saw childbed-fever deaths fall dramatically once doctors washed in chlorinated lime, yet the profession rejected his idea and he lost his post.
Q 04Evidence of soap-like materials being made dates back to around 2800 BC in which ancient civilisation?
Babylon
Babylon: clay cylinders of about that date held a soap-like material and carried an inscription about boiling fats with ashes, which is still the basic recipe for soap.
Q 05The first bristle toothbrushes were made with bristles from which animal?
Hog
Hog bristles from cold northern regions were prized for their stiffness and set in bamboo or bone handles; Europeans later found them too harsh and switched to softer horsehair.
Q 06Which company introduced nylon toothbrush bristles, replacing animal hair, in 1938?
DuPont
DuPont's nylon went on sale as toothbrush bristles in 1938, the new fibre's first commercial use; the stockings that made it famous only followed later.
Q 07What did dental floss inventor Levi Spear Parmly recommend running between teeth in 1819?
Waxed silk thread
Waxed silk thread, Parmly wrote in 1819, would dislodge the matter that no brush can remove; even so, nobody sold floss commercially until 1882.
Q 08The first modern commercial deodorant, developed in Philadelphia in 1888, was sold under what name?
Mum
Mum was a zinc cream rubbed on with the fingertips; its makers say the name honours the inventor's nurse, though another account ties it to the phrase 'mum's the word'.
Q 09The first commercial antiperspirant, launched in 1903, was called what?
Everdry
Everdry came first, but the aluminum chloride in early antiperspirants sat in acid that irritated the skin, until Jules Montenier's 1941 patent tamed it.
Q 10The English word 'shampoo', dating to 1762, comes from a Hindi word meaning what?
To press or knead
To press or knead is what the Hindi root means, and when 'shampoo' entered English in the 1760s it meant to massage someone, not to wash their hair.
Q 11The earliest recorded use of paper for toilet hygiene, in the 6th century AD, comes from which country?
China
China: around 589 the scholar Yan Zhitui wrote that he dared not use paper bearing the names of sages for toilet purposes, so plain paper was clearly already in use.
Q 12Joseph Gayetty's Medicated Paper of 1857, an early commercial toilet paper, was treated with which plant extract?
Aloe
Aloe was worked into each flat sheet as a lubricant, and Gayetty, who had his name watermarked on the paper, sold it as a medical aid for haemorrhoids.
Q 13Which company popularised toilet paper on rolls when it began marketing them in 1890?
Scott
Scott at first kept its own name off the rolls because of the nature of the product, leaving dealers to sell them under brand names of their own.
Q 21The US Army issued King Camp Gillette's safety razors to its soldiers during which war?
World War I
World War I put a government-paid Gillette kit in every American serviceman's pack, and millions of men came home in the habit of shaving themselves every day.
Q 22What does the Q stand for in Q-tips, the cotton swabs Leo Gerstenzang first sold as Baby Gays?
Quality
Quality: Gerstenzang got the idea in 1923 from watching his wife stick wads of cotton on toothpicks, and the swabs were Baby Gays before the Q-tips name took over.
Q 23The word 'bidet' is French for what?
Pony
Bidet means 'pony' in French, because the user straddles the fixture as a rider sits a small horse; the word probably comes from an Old French verb meaning to trot.
Q 14Which pioneer of antiseptic surgery gave his name to a mouthwash developed in 1879?
Joseph Lister
Joseph Lister, the antiseptic-surgery pioneer, inspired the name of Joseph Lawrence's Listerine of 1879, first sold as a surgical antiseptic and floor cleaner before becoming an over-the-counter mouthwash in 1914.
Q 15Listerine sales exploded in the 1920s when it was sold as the cure for which then-obscure term?
Halitosis
Halitosis was a real but obscure medical word, from the Latin for breath, when Listerine's ads made it a household fear; the product had earlier been sold as a floor cleaner.
Q 16Which hygiene habit has had its own global day every 15 October since 2008?
Washing your hands
Washing your hands with soap is the message of Global Handwashing Day; at the first one, more than 120 million children in over 70 countries took part.
Q 17The CDC recommends alcohol-based hand sanitizer containing at least what percentage of alcohol?
60%
60% is the minimum the CDC accepts, and even then the gel is only a fallback: the advice is to use it when soap and water are not available.
Q 18Which chemical did Joseph Lister introduce at the Glasgow Royal Infirmary in 1865 to sterilise wounds and tools?
Carbolic acid
Carbolic acid caught his eye because it was being used to treat sewage; in August 1865 he dressed a boy's badly broken leg with it and the wound healed without infection.
Q 19In 1854 John Snow traced a London cholera outbreak to a public water pump on which Soho thoroughfare?
Broad Street
Broad Street, now Broadwick Street: Snow mapped the deaths, found them clustered round its pump and got the parish to take the handle off; the well turned out to sit beside a leaking cesspit.
Q 20Joseph Bazalgette built London's main sewer system in response to which event of 1858?
The Great Stink
The Great Stink of summer 1858, when the sewage-filled Thames reeked so badly that Parliament's curtains were soaked in chloride of lime, pushed MPs to fund Bazalgette's sewers, which helped end London's cholera epidemics.
Q 24Sir John Harington, who described a forerunner of the flush toilet in 1596, was the godson of which monarch?
Elizabeth I
Elizabeth I's 'saucy godson' built his water closet at his own house at Kelston and named it Ajax, a pun on 'a jakes', the slang of the day for a privy.
Q 25Alexander Cumming's 1775 patent for what device laid the foundation of the modern flush toilet?
The S-trap
Cumming's 1775 patent covered the S-trap, a bend that keeps standing water in the pipe to seal out sewer gases, together with a sliding valve beneath the bowl.
Q 26Which slogan did Ivory soap introduce in 1891?
It Floats!
'It Floats!' became Ivory's slogan in 1891, trading on the air whipped into the soap mixture that let the bar bob to the surface of the bath.
Q 27In 1945, Grand Rapids, Michigan, became the first city to add what to its water?
Fluoride
Fluoride was tried after dentists traced Colorado's stained but decay-resistant teeth to the local water; in the years that followed, tooth decay among the city's schoolchildren fell sharply.
Q 28The Broxodent, the electric toothbrush Dr. Philippe-Guy Woog designed in 1954, came from which country?
Switzerland
Switzerland: Woog built the Broxodent there for patients with limited motor skills and people wearing braces; an American electric brush, the Motodent, had a patent filed back in 1937.
Q 29Which emperor gave his name to the enormous Roman baths, complete with libraries, finished around 216 AD?
Caracalla
Caracalla's baths could hold some 1,600 bathers at once and had separate Greek and Latin libraries; centuries later their halls helped inspire New York's original Penn Station.
Q 30Which 1990 self-help book by sleep researcher Peter Hauri laid out sleep-hygiene rules?
No More Sleepless Nights
No More Sleepless Nights (1990), by Peter Hauri and Shirley Linde, brought sleep-hygiene rules to a popular audience; Hauri had first set them out for clinicians in 1977.