Rainbow Dash doesn’t wash much. So, she smells bad. Pinkie Pie doesn’t mind, but Applejack and Rarity are another story.
 
(No, I don’t think she’s really like that, she probably washes every few days at least, it’s just a fantasy I like to have.)
 
I don’t know if that’s enough for a suggestive tag, but I wanted to be on the safe side. I’ll change it to safe if anyone thinks it’s not suggestive, I’ve even seen fart pics tagged “safe”. (And in case it’s not clear, she’s not farting here)