I can't get rid of the "old camper" smell, due to the wet dogs, kids, spills, muddy shoes, lake water, leaf collection, campfire smoke, decaying marshmallows somewhere, and lots of other memories. Ahhh, sweet smells.
It still does have a new camper smell in there somewhere...but like a fine wine, ages with time.
My wife and I thoroughly cleaned our RV the moment we got it. Then left the vents open to allow the air to circulate and left a few Smelleze RV Deodorizer pouches inside. There is still definitely a hint of the smell, but it's not as overpowering as it was when we first got it.
Use the toilet a few times, let tt closed, for a few days, then insert hose into toilet, open water to hose, DO NOT OPEN BLACK WATER VALVE, now yopu have that old used tt smell, with stains to boot.
Yust kidding, cook fish, cabage, leave old laundry in it, the smell will gradually diminish, and follow the recomendations of all the above posters, beans, cigars, husbands, cats, dogs, skunks, then, no one will want to be your neighbor, at the camp sites.
O.K. call me a nut but I kind'a like that new smell. I hope it never completely goes away. It reminds me of when we had a new camper when we were kids. That smell takes me back. My kids will probably experience the same thing when they grow up and take their kids camping. It also gives me a little reasurence that I'm doing a good job keeping it clean when the camping is done.
Wisdom is the right use of knowledge. To know is not to be wise. Many men know much, and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom.