Here's the test:
At check in, have the agent ask 'I smell baby lotion and poop - who started the party without me?'
If the customer holds their nose and cringes - no discount.
If they giggle, grin and do a little chacha happy dance - 'Did you check your own bag, purse, pouch, er...whatever you call that little furry pink thing you have with you..'
Manbag!