Smurfs - blue or just suffocating all the time?

They're definitely naturally blue because they're always out of breath having to run away from Gargamel and Azriel (his cat). You would think that SOMEONE would relocate them, or at least get rid of Gargamel and that darn cat of his.

You make an excellent point, one which I find myself pondering often. I would think that the U.N., with their blue helmets, would take particular interest in Smurfs.

Wouldn't you be blue too if you are an inch tall and don't wear anything other than pants and your voice sounds as if something's stuck on your throat? hehehehe.... Not to mention that they live too close to the ground and live in fungi, I guess that's why they have such skin colors. They can't receive humanitarian aid from the UN since they are not listed as one of the countries or areas belonging to the UN list. hehehe... You sure have tiny air in your brain today. But sure, anything goes here in mylot!

well theres two conditions that make humans blue and given that smufs seem to be roughly humanoid one would assume that the have similar biology. Too much silver in the diet can lead to a blue skin or they may a form of familial idiopathic methemoglobinemia. a genetic condition that used to be common in the hills of Kentucky. Both conditions are otherwise harmless so UN invervention is not required

Well, if the smurfs are blue from being deprived of oxygen, they why aren't the borrowers? I think we can safely say they are not deprived of oxygen. Lol!