Most good quality colognes are fine and most AD products come in a light scent that is easy to cover.
Ammo is the main exception - it comes in cologne scents/strength that will be difficult to cover/complement.
Most good quality colognes won’t harm your pheros significantly but some of the cheaper ones do contain antibacterials that will wreck pheros as well - Triclosan being the most common do your best to avoid these altogether. Also some essential oils - notably Lavender, Tea Tree, Witch Hazel and Cedarwood are all very detrimental to pheros. Which can make them useful for cleaning-up (so long as you rinse well) but you need to be very careful in general wear. Apply them near your pheros, not over.
More strategies for mixing/layering/combining/covering are covered in the various Intro stickies - you should read them carefully.
This is one of the main ones and the Application Points, IOIs and Updated Pheros for Newbies stickies in Mens should also be required reading.
