Caught a cold - from my human?

I (Ginger) have caught a cold but has had no contact with any other cats and only go out occasionally on a harness and lead.

So how on earth did I catch cold except from my 3 humans that are all sniffling, coughing and sneezing?

I went to the vets this morning and got a shot {{{hiss}}} and 5 days medicine but my human forgot to ask the vet where I would have caught it from.

What do you guys think?

A few years ago, I had a pekingese who was closer than my shadow. I was in the bed SICK 4 days and nights. Almost the first thing I did when I got better was take her to the vet for a sore throat and a runny nose.
So I agree you got your human(s) cold.

When Spyder was sick I asked the vet if they could catch it from humans because my sister was sick at the time, and he said cats don't catch illness from people.

Hey Princess, you look like me! or do I look like you?
Have you got a white tummy too?