I get this whenever I smell CK Be. The ex loved the stuff and would wear gallons of it. I always found it incredibly sweet and never really liked it. Very confusing when a guy is wearing it mind and you get brief flashbacks to your younger years.
I also feel physically sick whenever I go past or into bakeries and smell fresh croissants and buns. Remins me of when I had to start up the Co-Op in store bakery at 5:30am in my teens and would leave at lunchtime smelling like a walking pastry. Incredibly hard smell to get out of your clothes too.
Do you have smells that instantly take you back to events, places or people?