Injecting air into a muscle, which lies beneath the skin, is generally harmless, according to HealthTap.com. However, when administering drugs, such as insulin for diabetes, injecting air instead of insulin may result to an under dosage of the medication.
An intramuscular, or IM, injection is a type of drug that is injected into the muscle of an individual. It is essential to know what part of the body the IM injection should be administered. For babies, the injection spot is usually the middle third section of the outer side of the front thigh, which is the same for toddlers aged one to three. The deltoid muscle may also be used as the IM injection site for toddlers and children from 3 to 18 years old. Injecting air directly into the blood stream can cause blockages in blood circulation and may result in serious damage.