Spurrious zbot warnings

I've been getting intermittent warnings about zbot activity, which is a very scary thing. However, I followed the instructions, ran scanners and malware checks in safe mode, and everything came up clean on our two windows machines. I changed our wifi passwords and did everything short of reformatting the box. I looked online and every other zbot forum post had a similar experience. I'm convinced that the traffic detected is coming from one of our non-windows devices, even though zbot is a Windows trojan.

I ran an experiment, to see if maybe one of the sites I visit on my phone is infected and trying to install malware, but I need more information.

Can I get the exact times for the questionable traffic from my IP? (Do you need more info, or can you look it up based on my account?)

The recent email subject is:

[2.8.2018 40952939]  Compromised Computer Notification from Cox Communications

Thanks in advance!