We do not recommend that AirTamer® be worn by infants. There is no risk from the operation of AirTamer®, in fact it will keep the air cleaner for the infant, but the concern rests with the infant putting the AirTamer® unit or lanyard in their mouth and thus causing a choking hazard. It is completely safe to use AirTamer® around the infant (e.g. if you wear it when your baby is near you) so long as the choking risk is recognized and responsibly managed. Negative ions emitted from AirTamer® will not harm an infant and only help keep the air cleaner. The AirTamer® A302 uses lithium coin cell batteries so it is particularly important for this choking hazard to be responsibly managed because ingestion of these battery types can be very dangerous.