Why cant we smell our own body odor? most of the time

most of the time
Answers:    We can. Don't take a shower or hip bath for a day and you should be capable of smell something bad. Delay cleaning for a week and foul. You may not hold a keen smell, but trust me you can smell odor from your own body. A creature may be in denial or use to their own odor that they don't realize it's coming from them.

Dae
You draw from used to smells. You won't know if your house has a unnatural smell, or if you wear too much perfume, or if your clothes smell musty. It's kind of close to your mind tuning out a repetitive sound so you don't catch sight of it any more.