With my ex I use to use a flavored lube while giving him oral, it wasn't so much to add flavor because I didn't like it taste cause that isn't true. I liked the way he tasted just needed to spice it up as it seemed like a chore for me. He never gave so nothing was ever used on me.
My current partner loves my natural taste and smell as I love his as well. I have bought some new oral gels an they taste good I have tasted them when they came in I keep forgetting about them since we prefer just spending time together and getting down to business