What Does Autism Have to Do With My Child’s Sense of Smell?

One little known, under-researched aspect of Autism Spectrum Disorder is that children with autism often have a heightened sense of smell. This makes sense because a common indicator or symptom of autism is issues with other senses, such as hypersensitivity to tactile input, bright lights, loud noises, or unfamiliar tastes. But why would intense olfactory senses be a problem?

This may not seem like a big deal to someone who is neurotypical, but consider all the important functions of olfaction, or the act of smelling. It is a vital component of eating and drinking, a way to sense danger (specifically of toxic food or drink, but perhaps even other forms of danger), and, as odd as it may sound, it is also involved in social communication.

For children with autism, this olfaction is happening in an atypical way. For example, they employ a different part of the brain than neurotypical children to distinguish between known people and unknown people. They also have an unusual sniff pattern called “aberrant sniffing.” Those with autism will generally sniff deeply no matter what scent they are smelling. Whether inhaling the sweet aroma of fresh baked cookies or inhaling the stench of a skunk, their bodies will breathe in with the same intensity.

This aberrant sniffing may prove to be one of the best ways to detect autism early because monitoring for it can be done without giving the child any directions whatsoever. Doctors may be able to test for and observe this deep and undiscerning inhalation at a very, very young age.

Because, for individuals with autism, any and all smells can be alerting, it is a good idea to experiment and find the best scents to make your home a safe and peaceful place. Many have found success with calming aromas like lavender or vanilla. If, at times, you need a more invigorating or energizing fragrance, scents like mint, cinnamon, or citrus might be a good fit. Take the time to answer the question, “Which scents do your child associate with pleasant activities and a safe place?”

Positive Reinforcement provides in home ABA therapy services to Richmond Virginia, Somerset Kentucky and surrounding areas