Most asthma inhalant medication are pretty standardized and often over the counter products. The likelihood of an adverse reaction in what I presume was an elementary school student seems remote.
Albuterol is the most commonly prescribed "rescue inhaler". It is very safe, and very effective. It is not, however, over-the-counter. Most likely BECAUSE it is so effective- anybody who needs it really needs to be monitored by a doctor. I would have no problem loaning my inhaler to someone who has an attack, while advising them to see a doctor.