He's blind, not stupid, right? I mean, a baby is a person, a dead bird is a dead bird. On top of that, he's blind, not olfactorily challenged. I'm not sure how/why there'd be smoke, or if he'd recognize it as not being a bird-flesh smell. It's damned hard to get anything to smoke in a microwave either. I'm also thinking there's no way the turkey would fit in that microwave (who the hell cooks turkey in a microwave... Yuck), or that he would need his cane in (presumably) his own kitchen.
The last thing is, if this person had such gross incompetance, would *you* leave your child in their care? I'm a parent of a 1.5yr old; we're really careful with where he is at all times.
Some of the joke can be written off as "required visualization" (such as cane and smoke), but in all seriousness there is no funny here to be had.
The non-parent in me wanted to laugh at this comic, but couldn't bring myself to do it. It's not really all that funny to begin with. It's a tired old "swapparoo" joke that falls flat on it's face.
In short : Not funny.