My Wife Finding Out She Lives With Three Pantie Sniffers

My wife of about fifteen years at the time comes to bed one night with her embarrassed looking smile on her face, tells me she needs to tell me something but is embarrassed about it. Okay, let's hear it, where did you fart? She smacks me and says Oh, yeah, not it mister this is about YOUR oldest son and tells me about finding a pair of her underwear under his bed to which I make up like six nicknames for him right off the top of my head garnering another smack from her and says Stop! it is embarrassing, why would he have my underwear in his room under the bed? I came right out with it telling her he is putting on his face and inhaling your scent. Oh my god!! she whisper yells at me covering her mouth at the same time and ending with you are joking right? I tell her nope, you are looking at the pantie sniffing champ of 1973-about '77 with both my mom and my sisters dirty hamper diving me hoping for sweaty fresh ones, to which she is now making seriously EWW faces and cringing at the words Sweaty Fresh ones. I for one am glad he is not gay because I was on the fence there for a while, just kidding he is a totally normal teen guy, pretty sure he is even taller and heavier than I was at his age. She puts her face down into the pillow and pretends to scream out saying she is not ready for something like this to be the answer to the mysterious location of the underwear. She looks at me again and asks what am I supposed to do with all of this information? I told her whatever you do, let him be and get prepared for possible crusty substance in them also but I would rinse theirs out and put it somewhere safe to dry. Oh my god she says and rolls over telling me to stop talking now! she is completely grossed out now and why couldn't we have had a daughter the second time worried she is going to have to buy two dozen extra ones just so she never has to go without them. She could not help herself though and went snooping while home during the day, found not just one pair but several hidden in drawers and under his bed even further, she tells me about the next night and I asked her if she pulled them all out of there and she rolled her eyes and said no, that would be too obvious so I just took a few, I asked her how many she found and she says like six I think. I told her you know what you should do, go running tomorrow in your oldest pair, pull them up tight in your, well you know and leave them right on top in the hamper and see what happens. She smacks me again saying no way she is going to encourage this behavior and tells me I am cut off for a month, then I got laid so I think it actually turned her on a bit. She stops for a second and asks me if I still do it, do I sniff her underwear sometimes, I told her I can not lie to you dear and the answer is Yes, especially after one of your runs. She threw her hands up in the air and said Why, WHY do I have to live with three adolescent boys?