How come when people stink they don't know that they stink?

Answer 1

probably because the stench doesn't normally go to their noses but to others, the only way you know you stink is if someone says 'pee-yew!' when you pass them...or smell yourself. no matter what you should still wear deodorant ;)

or they are use to the smell and dont realy care because love is as deep as inner beauty

Answer 2

Our sense of smell is highly adaptive, so we often become desensitized to our own body odor over time. Additionally, other factors like poor hygiene habits, medical conditions, or anosmia (loss of smell) can contribute to not realizing that we smell bad. Social norms and the desire to avoid confrontation may also prevent others from pointing out the issue.