my son may have Anosmia

No they don't.

Mine doesn't. He'll ask me what a smell is, but othere than that, there's no reaction. He likes spicy food too. I think because DH does, he'll eat (and does eat) anything DH does.

I would speak to the doctgor about it.  Hopefully its just something simple.  My GF has that and doesn't smell anythign LOL.

I don't think until a certain age kids can really identify that they are smelling anything that is bad/good or otherwise.  My 4 year old will now say something stinks or smells soooo good... but I don't think my 2 year old has ever said anything about a smell (and my 4yo was the same way until maybe the last 6-12 months).  I mean, I can be changing my 2 yo stinky diaper and she's completely oblivious to the fact that she's stinking the house up.  LOL  If it worries you, you can ask about it... but I guess I wouldn't be too concerned if I were you.  

thanks everyone. he's perfectly fine other than the lack of smelling so I'm gonna try and not get all worked up over nothing.

Yes, my 3 year old does say something smells bad and can identify smells, and has been able to for about 6 months. He has a sensitive sense of smell like DH, and is sensitive to spicy foods, like kinda freaks out. Strangely, DH seems under-sensitive to spicy foods.

my dh cant smell anything unless it is wicked stinky.and my son i dont know  if he can smell or not cuz he cant tell me 

Hmmm.....I hope you figure it out. Good luck.