Yosef Karo

“ He should not put a loaf of bread under his armpit, because of the sweat. He should not put a cooked item or drinks under the bed, since an evil spirit rests on them. He should not stick a knife in an esrog or a radish, lest one fall on its edge and die.
Hagah: Similarly, he should be careful of all things that cause danger, because danger is stricter than transgressions, and one should be more careful with an uncertain danger than with an uncertain issur. ”

“ It is prohibited to eat food and drinks that a persons soul is disgusted by, such as drinks and food that have vomit or feces mixed with them, and rotten moisture and things like this. It is assur to eat and drink from dirty vessels that a person's soul is disgusted by them, like bathroom vessels and glass vessels that they let blood into. ”

“ They also wrote to flee from the city when a plague is in the city, and one should leave at the beginning of the plague and not at the end. And all of these things are because of the danger, and a person who guards his soul will distance himself from them and it is prohibited to rely on a miracle in all of these matters. ”