Regarding becoming more sensitive to tastes

I had a similar experience just today (day 5). I put what I thought was an all-natural eucalyptus bubble bath with oil and when I smelled the bottle, it made my nose crinkle. I could tell immediately that it was not "all" natural. I have used this same stuff about 4 times before the fast and never noticed the smell. It's kinda neat being like this. :)