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Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How exactly do athsma inhalers work?
gpt
During an asthma crisis, the airways in the lungs get tighter and almost closes completely, therefore air cannot pass and the person cannot breathe.
Asthma inhalers contains molecules (such as salbutamol) that will force the airways to release the tightness and therefore open again so the person can breathe.