Heightened sense of smell 12dpo

Howdy cycle buddies! So I’m 12dpo, af is due Friday 1st. I’ve not really had any other symptoms apart from cramping now and then, tested this morning with a cheapie and got a BFN, same as yesterday, I put a poll up yesterday with a pic of the strip and everyone was pretty much split in the middle with 43% saying they could see a vvvvfl and the other 57%not. Now I know you’re not out till AF shows but I was just wondering if any of you experience/experienced a very heightened sense of smell at this point and still got a BFN, did you ever get a BFP after a few days? I mean I can smell pretty much everything especially perfumey stuff, not enough to make me throw up but definitely not pleasant. I know sometime people can get this before AF.? What are your experiences?