Well, yes, the NA beer will eventually start making him smell the same. My stbxah hasn't drank anything but NA beer for a year and smells just like he did before, has stomach issues again, and has not changed at all. I am almost 99% sure he is only drinking NA beer and I have no idea why. But, don't let it fool you. It has alcohol. 5 NA beers are like 1 regular beer. I know this because of my divorce. It is in the papers if I suspect he is drinking I do not let the kids go with him. My lawyer said any judge will see the NA beer as drinking. Also, when someone gets a DUI and goes back to get a license they are asked if they drink at all including NA beer. So, according to the law, they are drinking. They are still processing alcohol. Read the bottle. I think it says 0.5% that is not no alcohol. They are still drinking it to fill a need to drink.
GOOD Luck. I have been dealing with the NA now for a year. The same issues.