Many familiar household products are inhalants. The product is inhaled through the nose or mouth. It is often sprayed into a plastic bag or soaked onto a cloth or sleeve before being inhaled. It can also be inhaled directly from the container. The vapors from the product enter the lungs where the chemicals pass directly into the bloodstream and are quickly circulated through the body.
Most inhalants are 'depressants'.
This does not necessarily mean that they you feel depressed. They work by slowing down the activity of the brain and central nervous system. They slow down the messages going to and from the brain to the body. Inhalants have similar effects to other depressant drugs such as alcohol and cannabis. Any given amount may have a slight effect on one person, but a much greater effect on another person.