I don't think anyone really knows. Some people, even camera repairers, won't have lenses with fungus in their storage or workshop. Others tell you not to worry. You will get both bits of advice. Personally I'd not take the chance. OTOH I did have a lens with fungus for a good while and it seemed to remain an isolated case. I only found out when disposing of it.
I agree with you but was wondering whether others would as well. I suppose it also depends on how I store it, and whether the ambient humidity in this part of the world will adversely impact the situation. Thanks!