Oak

I've been trying to figure out all the great secrets of Virology, but I keep running into walls that don't make sense to me. Making healing viruses is simple enough, but I've been trying to make airborne diseases and bioweapons and they never turn out how I want. Could any experts of the system lend me their knowledge? If you look at my attached file, I have made a necro virus. I have also attached my basic calculations. According to the wiki, this should spread by air, but for some reason is always ends up as contact. Here is the Virology Wiki Guide for reference, it has all the values and algorithms. https://www.paradisestation.org/wiki/index.php/Guide_to_Virology I've been trying to figure this out, but I'm not sure I can. This problem has ruined countless beard, hallucination, and combustion viruses.