What is the primary safety issue with a taste deficit in small children?

A small child with a taste deficit is at higher risk of poisoning than other children.

Small children are in any case at high risk of poisoning or choking by putting unsuitable objects into their mouths.

Unpleasant-tasting substances can alert a small child to a problem before they've eaten sufficient amounts to cause illness, serious injury, or death. With a taste deficit a small child might ingest quite a lot of a poisonous substance without being alerted to possible danger by a bad taste.

A small child suffering a taste deficit will also have an impaired sense of smell, and so will be more likely to be injured by noxious substances which they don't actually ingest, the smell of which might normally deter them from playing with the poison.

The taste and smell impairment could also cause nutritional problems, in that the child mightn't find attractive the taste of foods it would normally eat.