That is exactly the danger.

One of the biggest drivers in the denier argument is the historically high CO2 in the ice core record, and the pore sizes of plants stomatas. Both of those could easily be explained by a methane gun event.

What is most interesting to me, is how did so many methanotrophs get airbourne?

Most likely to me is undersea volcanoes lofting seawater loaded with them, because if there was enough methane in the air, to support evolution of an airbourne bacteria just to fill a niche, it would take longer than the 7 year life of methane in the atmo....

http://astrobiology.com/2016/08/specialized-life-forms-abound-at-arctic-methane-seeps.html

edit: add

https://aeon.co/videos/how-airborne-microbes-ride-clouds-hop-continents-and-even-make-it-rain