Chemical allergies are an area where I'm fine oversimplifying decisions and using a simple heuristic of "if my body says no, stay the heck away." Of our five s

Chemical allergies are an area where I'm fine oversimplifying decisions and using a simple heuristic of "if my body says no, stay the heck away." Of our five senses, smell is the most well attuned for detecting something that'll hurt us internally (ie poison cancer).