For me, there is some odor, but I think it's too weak to
identify. I give off some chemical that causes people to get
post nasal drip, so people have to sniff and cough to clear up their nose and throat. It also numbs the sense of smell (whether it's because of the drip, or direct action of the chemical, I don't know). I virtually never hear anyone say "it smells", people just look confused because they don't understand why they are getting a drip.