On containers and doors accessing places which contain harmful things.
In water there are such things as: feces, dirt, bacteria etc.
The things that create spit are organs in your mouth called salival glands. They create your spit.
No. Cats do not produce venom.
Two things that are harmful
spit
If you get spat at by a devils coach horse beetle it is not necessarily harmful. It is only harmful if the spit touches your eyes or sensitive body areas.
Toxins contain chemicals or substances which are harmful to humans and animals.
It could contain a number of things that are harmful to people - including faeces, bacteria, insect eggs, chemicals etc.
things are harmful to earth
Because it might contain certain harmful gases such as Carbon dioxide, methane, and so on which are harmful to lungs.
no, but it will feel very wierd, and you might spit out fiz!