Whenever I cross a biryani shop I get a good smell and that induce my appetite. Aroma plays very important role in our life as well as in our body. My father always does pooja almost every day in the morning. The smell of the incense will give a freshness and good feeling to start that day. Perfume, deodorant, fragrance, javathu, akthar are some aroma producing things. I have this question why do we use all these things to suppress the bad odor from our body? May be yes, but I think that is not the real reason. The real reason is our mind gets used to the smell and sends us the signal that everything is normal. In some random day if we forget to put on our fragrance then our brain does its job by indicating that something is wrong. It is all our brain interpretation.
In my 5th grade whenever I see my math teacher I will get a fear sense. She used to wears a perfume that has a very unique smell. Even now if I cross anyone who wears the same perfume then my sense changes how super our brain is! I like some smell and I hate some smell. It is all mind game. It is said that if you are not able to smell then you will not be able to taste. So every sense is connected and smell is most sensitive sense. Check what room refresher is used in big hotels and in your office. Everything has its own reason. In office it is a practice they use lime or aqua freshener which will give you a fresh feel and keeps the employee in good mood. And in some hotel they use lavender and other flower based perfume which will give you a good ambiance.
Smell is great sense!