As anecdotal support for “constantly tasting everything”, I offer my high school scientific calculator.
After one year of 2 hrs per day of chemistry class, its crevices around the display had a permanent collection of precipitate.
I suspect that even without intentionally tasting things, nearly everything in a lab is ingested as an aerosol. It would be unsurprising if months of such exposure led someone to develop a hunch about a molecule.
As anecdotal support for “constantly tasting everything”, I offer my high school scientific calculator. After one year of 2 hrs per day of chemistry class, its crevices around the display had a permanent collection of precipitate.
I suspect that even without intentionally tasting things, nearly everything in a lab is ingested as an aerosol. It would be unsurprising if months of such exposure led someone to develop a hunch about a molecule.