favorite: hmmmmm .... I really like fresh clean scents, cucumber, pina colada, vanilla, etc.

most widely recognized .... either vanilla or cinnamon would be my guess.

I think I'd give up sense of smell first ... since my sinuses act up half the time already, I'm half way there! LOL

repulsive ... I think skunk is probably the worst ... or rotting raw meat.

I guess if I have a "scent" it would either be vanilla or raspberry ... the only scented things I use are lotion (sometimes scented and sometimes unscented) and my shampoo.