On the 'lack of sensory input' side of things, I suffer from a relatively uncommon (and let's face it, not very impressive) condition known as
anosmia - the inability to smell. I can *breathe*, obviously, and I still have reactions to certain nasal stimuli (smelling salts, for example, still give me a kick in the head), but actual *odors* are totally imperceptible.
Although there are a number of potential causes, in my case the condition is (as far as I know) congenital - I've been smell-less for my entire life, or at least the parts I can remember. Presumably, the cause is genetic, which means that barring experimental gene therapy treatments that are still in the early stages of development, nothing can be done to fix the problem.
There are a number of negative side effects linked to anosmia - things such as decreased appetite (smell and taste are so strongly intertwined that the loss of the former can really screw up the latter), depression (imagine the smell of your favorite flower - then imagine never being able to smell it again), and the obvious issue of being completely unable to detect things like gas leaks, spoiled food, and rotting corpses through smell.
Fortunately, except for that last one, most of these are psychological - the result of *losing* one's sense of smell. Congenital anosmiacs like me never had the sense to begin with, so there's not really anything to miss. Much like Lilly (who was born blind), I've found myself curious about what I'm missing, but not particularly upset by it - especially given that out of all the human senses, smell is probably the easiest to live without. Indeed, there are even some benefits - especially on chili night.
For the most part, my life has been perfectly normal. I've never had issues with food being tasteless (if I did, I wouldn't be so fat
), and there are enough other senses to enjoy that I've never felt particularly deprived (indeed, I think my sense of touch may actually be *stronger* than most people's. Equivilant exchange, maybe?). It does mean I have to be careful about certain things, though, especially in the kitchen - I *never* have gas-powered devices in my home, and I have to manually pay attention to expiration dates on things like milk and such to make sure I'm not chugging something poisonous. Sadly, it also means that I'll never get to experience certain romantic sensations, such as incense, or the scent of a woman's perfume.
I suppose I'll just have to taste her instead...