How long do you listen to a fire alarm before it causes damage to your hearing?

Prolonged exposure to loud sounds, including fire alarms, can damage hearing. Most fire alarms produce sound levels around 85 decibels or higher, which can lead to hearing damage if exposure lasts for more than 8 hours. However, even shorter exposures to sounds above 100 decibels can cause immediate damage. It's best to evacuate the area promptly to minimize risk to your hearing.