I would like to start a conversation about percutaneous toxicity.
Since I have heard very little about it.
An example:
Someone inadvertently places his hand lightly impregnated with butter on a seat (stuffed with plush). Another day, someone fixed the motor of their automobile, and inadvertently placed his hand not rinsed (dried with cloth only) on that seat.
As plush seats contains humidity, and absorbs fat; then motor oil particles would remain impregnated. And as the buttocks tend to be humid and expel water vapor and sweat, then that motor oil could be absorbed slowly through the buttocks, and being so slow absorption, asyntomatically dangerous, cumulative, and depot toxicant.
Other examples:
1-A chair painted with any paint that contains lead (lead paints are prohibited today)
2-A chair painted with a glaze that melts
3-Over a seat stuffed with sponge, cookie particles has been spilled (containing saliva, artificial oils, chemical preservatives, etc) and someone inadvertently sat on.
The next day, a visitor sat on (who washed his pants in the washing machine with a triptych of colors and bills inside)