So, i spray Ammo on the wrist, let it dry, then i spray regular Cologne over it, or maybe another phero? Would that mess up the composition or something?
The thing is that i really hate the smell of ammo and i’m running out of spots to use pheros on when i use many 
Nope, don’t sweat it you can put different sprays on the same application point if you want to 
When using Ammo I like one between wrists then one on each side of the neck. Then I wait a few minutes and use IS over the exact same spots, works great for me. Give it a try and let us know. I personally don’t use a cover scent with AD mones but I’m sure it’s fine.
A cover scent is almost mandatory when I wear more than 2 sprays of AMMO. I don’t care for its scent and will certainly use a cover when I wear 3 sprays of AMMO.
Keep in mind, that by putting them on at the same application point, you may be diluting the mones in the AMMO or giving it more alcohol so it may diffuse more quickly.
I’ve also applied AMMO to my hair, though, that seems to last the longest for me.