Just for the record, Italian chemtrailer activists a couple of months ago took a video of "burning snow" in Piancavallo (PD), North-Eastern Alps. They also added results of chemical analysis showing Al quantities slightly higher than EPA recommended limits for drinking water. The usual reposting frenzy from uncritical, no-factchecking audience followed.
The video is here:
It is quite interesting the fact that the ALISTER association who took the original video is actively fighting for "freedom of choice for vaccination", which is another way to say "antivax movement".