Generally Jason should listen. Maybe he can't smell them, but the chemicals are still there.. Unless he WANTS to die, he should leave.
Doctors can use technology to evaluate preexisting health conditions so one does not push themselves too far. Technology can help monitor your heart rate, blood pressure, fat percentage, etc. This can give a base to know what to know where/ how much you improved when you look back. Technology can also be your own equipment like a treadmill which makes you more fit.
Answer: By questioning her environment.
Explanation:
Veronica has been issued drugs by carious doctors after she complained of chronic headache. But after several administration from the doctors she wasn't getting better. Dr Rishi began evaluating her by asking questions about her environment, then he realized that the roaches, water leakages and mold in her home was the cause
His approach makes the pain medication effective and permanently fixes the health issue.
His approach is the best and recommended, sometimes it's not about just the health of the individual, there some surrounding questions that should be asked which will guide proper medication.