I’d say a good way to prevent detecting the pheros later in the evening is to apply the cover earlier in the evening, the sooner after dry down (about 15 minutes after you spray the pheros) the better. I would also say that the stronger the perfume, the more protective the cover will be.
Shine is known for having a bit of a rank odor–for me, I can detect it, but it’s pretty slight. I usually dash a cover of either Pink Clouds (Pink Sugar knockoff) or Oscar by Oscar de la Renta over it. Instant Sexiness gets fewer complaints, and I’m often comfortable wearing that one without a cover, but sometimes I cover it anyway. It enhances diffusion, after all.
Here’s a thread on the Shine situation: