I woke up in January 2020 with serious chest congestion. My sinuses were fine and I felt perfect when I went to bed the previous night. It was the weirdest thing ever because it just hit and I don't normally get sick. I got better after about a week, but then it came back. It took about 5-6 weeks for me to recover, but I had a slight cough for a while. The slight cough still comes and goes.
I remember other people saying the same thing happened to them in that time period.
Anyone have that 4chan post from October 2019? Some Anon in Canada issued a warning.