Minor Oxygen Conversion Symptom doesn't work at all

[zjdtmkhzt]

Hello, just adding my own experiences. I've also made pathogens with both of those Symptoms, and they never seemed to work for me either.
I never got the message about "my body deteriorating" with conversion and I certainly still needed to breathe. Not sure if maybe they healed a small amount of OXY damage but not enough to outpace the suffocation, it's kind of hard to measure.