BBC - Transit of Venus - the CHEMTRAILS Connection?

so, yadda yadda yadda, last night, the BBC got THREE WOMEN SCIENTISTS (for some reason (oh, yes VENUS (I get it (now))) to talk about the Transit of Venus across the face of the sun.
Anyway, I was expecting to WATCH the transit of Venus across the Sun's face during the show, that's how stupid I am.
No, the transit was to happen later that evening, TWO HOURS LATER.
So, I went to bed.
Wait, wait, wait, go back a bit... I did watch the hour-long BBC Transit Of Venus show and I did watch (seriously) at one point, scientists on top of a mountain in the Austrian Alps plucking actively dividing microbes or visibly replicating viruses out of passing clouds. This gave the Venus transit scientists a chance to suggest that similar microbes or viruses might also exist in a 'cooler cloud layer' on Venus and that sounded all wonderful and I can't wait for the data back from last night's transit...
STEP ON THE FUCKING BRAKES AS HARD AS YOU CAN
Chemtrails, what did they just say? Did the BBC last night define (for You The People) exactly what's in those white 'persistent contrails' that pour out of the back of specific gray jets at high altitude?
Not aluminum.
Not barium.
Not sulfur.
But LIVE MICROBES AND VIRUSES? And why would they do that?  Very interesting...