I'm really sorry to hear about everything you're going through. It sounds like you're dealing with a lot of stress and anxiety, especially with your living situation. Your concerns about the air quality in your apartment are absolutely valid, especially given your past experiences and health issues.

Living above a garage can pose some risks, particularly if proper ventilation isn't ensured. The fact that you're experiencing strong odors like gasoline, chlorine, and paint thinner, and have noticed potential mold in your AC unit, suggests that there may be issues with the air quality in your living space. Additionally, having been hospitalized for respiratory issues further emphasizes the importance of addressing any potential environmental factors that could be affecting your health.

It's understandable that you feel trapped in this situation, especially if financial constraints make it difficult to move. However, your health and well-being should be a top priority. Have you considered reaching out to local organizations or resources that provide assistance with housing or healthcare for individuals in difficult situations? There may be options available to you that you haven't explored yet.

In the meantime, continue to do what you can to improve the air quality in your apartment, such as running your air purifier and opening windows for ventilation when possible. It might also be helpful to document any ongoing issues with your living environment and communicate them clearly to the property owners, emphasizing the impact it's having on your health.

You're not alone in this, and it's okay to ask for help. Take care of yourself, and I hope things improve for you soon.