It is very common to have a zinc deficiency in this country, which is why I'd recommend you check that first.
One common cause is a possible deficiency in zinc, which is a mineral that directly effects our sense of smell and taste. Is there something natural I can do to remedy this loss of smell and taste? As you can imagine, eating is no longer a pleasure. I'm not sure if they're in any way related, but I noticed the loss of both senses after I had my teeth cleaned.