Today, I was cleaning, and then a female colleague said that I had a cold, and then a male colleague said that I had a cold and had a drink, and then a female colleague said that you infected the cold

Today, I was cleaning, and then a female colleague said that I had a cold, and then a male colleague said that I had a cold and had a drink, and then a female colleague said that you infected the cold. What's the point? Just chatting.

Cold is spread through respiratory tract, spitting is also easy to be infected, and people with poor immunity are easy to be recruited.

So your male colleague is wrong. Being in the same space is easy to be infected.

One situation is that this female colleague wants to find a topic to chat with this man, and the other situation is really a casual chat about hygiene.