I entered the contaminated area in Rify in full nbq suit. (full Plate Carrier, NBC Respirator, fully healthy)
When my filter was almost empty, I ran to a safe area. Before leaving the contaminated area, my filter ran out and I took the disease. Once in a safe area, I took off my respirator, bandaged my wounds, and used PO-X Antidote. The disease symbol disappeared, however the character kept coughing and cutting until he had the disease again. I used another PO-X Antidote, but the same thing happened. In the end, I died.

This happened to me twice. In rify, in the same situation (filter runs out). I have not tried again.