Sexpionage itself has never "flipped my switch", but I suspect that's because I wear tiny amounts, and have rarely worn it for anything but to enhance sex. However, pretty much anything else that has alpha-androstenone in it (Dominance, Leather, Blatant Invitation and La Femme Noire) has flipped my switch in the past, BIG TIME. Alpha-androstenone is an "alpha male" kind of phero, and when it's added to women's blends it's in tiny amounts to add the air of a "dominant" vibe to a blend. It's also famous for flipping switches.
From what I can recall from previous conversations, it's a "sticky" phero, too, meaning that it can stay around for a few days after application. So if you wear it one day, and then apply more the next - even to sparkling clean application points - you're effectively adding more alpha-androstenone to what is still clinging to your skin.
It can flip your switch though, even if you haven't worn it in a while, if you've applied too much, or possibly at different times in your cycle. Personally, I find I can only wear blends containing alpha-androstenone in the week following my period. Otherwise there's an excellent chance that people around me will die. If I DO wear these blends at different times of the month, I tend to wear much, much less, in order to avoid manslaughter charges. Strangely, they still tend to work for me in tiny doses - everything but BI, which seems to make me want to slaughter whole towns, no matter how much or how little I wear, or when I wear it.
At any rate, I have had to be pretty meticulous about figuring out how much I can wear, and when it's best to wear it.
Like Halo said above, androstadienone is the one that can make you angry if you're in the mood and aren't getting any.
I suspect this is the reason I can't wear BI - not its inclusion in the blend, but maybe the proportions just affect me badly. Blends containing -enone (alpha-androstenone) tend to make me overly-fiery, but BI makes me feel so angry - and out of nowhere! - that I feel like my head will explode (and then maybe some huge Godzilla-like monster will leap out of my body like it's an "Eggers Suit", and then indiscriminately devour all the townsfolk).