How bad is the smell of animal droppings for you?

In science class we have a lot of snakes and mice and htings and it smells so bad, all the methane, Im worried about my health. Can it cause permanent damage? what is the damage and how bad is it?How bad is the smell of animal droppings for you?
The methane concentrate would have to be so many parts per thousand in order to be classified as dangerous.





Still,Any droppings can carry disease





and so the best bet is to sit near a window





Or do like they did during the bubonic plague and show up to class one afternoon holding a bouquet of posies under your nose.How bad is the smell of animal droppings for you?
Dude, your sick.