I was thinking about this when I applied my pheros today, third day I’ve ever used them, and then threw on a long sleeve shirt. I applied 2x Ammo to my wrists, 2x honesty to my elbow crooks, 2x shine to neck and 1x IFM. Would the Ammo and Honesty not work as well because of the long sleeves blocking the pheros or does it not matter?
anyone know this one?
If you covered the application points it would certainly hinder anyone getting a whiff of them.
The other thing I would recommend is to read Rennys Stupid Noobie Tricks in the mens section. It will give you good idea of how to first start using the products.
Tight, snug form fitting cloths will hamper diffusion, believe me I know LOL
If I am going to be covered up I will choose different application points. The products still work when covered loosely but I find hits are strong when I apply to places that diffusion is not hampered as much.
When wearing long sleeves, neck, hair, back of neck, on chest near shirt line, wrists and back of hands. Are good spots to try.
If you have to you can spray on cloths but I dont like this method as much. Hampers diffusion in my experience but alot of people like it.
Good news is summer is just around the corner so you can take it off baby 
Tisha