Some clubs do control the contents of bags and jackets. When I entered a club the guy at the door asked me about the bottles (Ammo & IS).
How do you handle such situations? Do you put some alternative labels on the bottles?
Leave them as they are IMO. - There are no restrictions on mones in most if not all places and trying to disguise them as something else is only liable to attract undue suspicion.
Keep a bottle or two in you pants pockets. Never had them even check my pants pockets.
Apply before going in or if you need to reapply sneak it in while wearing boxer briefs. I believe there’s a brand of underwear called StashWear
Just remove the labels.
I have a Jacket that Has an Inside Pocket but Also has 3 Little Elastic Loops… Kinda like the Molle Straps on Military Gear… They Hold a ToGo Rather Tightly… Also Makes it Easy to Just Reach in and Spray to the Shirt… No One the Wiser… Just Be Sure Which One you Spray… TUTH when IG was Your Target could be Bad…
Sounds like south American or East Block tactics to me …
reminds me of the good old days there !
Pago
Tell them the (incomplete) truth – it’s cologne.
Or simply apply in the car before going into the club and leave the bottle behind. Stuff lasts like 4 hours anyway so if you’re going into a club at 10 that should carry you till 2am.
Keep to go’s as opposed to full 30ml as they are harder to conceal under the scotum unless you are well and truly gifted 
Or if you are uncomfortable with that idea, if you have old perfume spray samples (typically 3-5 ml) fill them with mones and it looks less suspicious than an unlabelled bottle.