The "smoke" we can see is neither a fuel dumping nor a contrail.
The chemtrails, in fact, is iridescent too. Don't listen to hoaxers who repeat that this document is false or similar lies.
The author of this important video writes to Tanker Enemy:
"Nice job tanker enemy... I like the enhancements. Btw, I took the video while we were flying over Canada. Thanks for translating the video so more people will understand what's going on. I'll post more as I see them".