I've got the flu. So don't come today. I don't want to give it to you.

This is a conversation I've unfortunately had twice this week, and those words are just fine. Maybe a comma instead of a period after the flu. I'm not positive, though, because I'm not thinking clearly because I have the flu.

"I don't want to give it to you" is very common. You could also say "I don't want you to catch it (from me)"

Yes, it works! As a note, “I’ve got the flu, so don’t come today” is one sentence, separated by a comma.

Native English speaker (American) here: yeah, I've heard that before.  If a healthy person doesn't want to be near a sick person, they might say "I don't want to *catch* your cold*"  You can also say, "I don't want to *spread* sickness across the office," if you're worried about getting multiple people sick.  Since sickness is caused by germs or virus that get spread via sneezing and coughing, it is something physical that you can give to others.

The words are fine, I love the sentiment, but the first full stop might be better as a comma. Unfortunately it’s not as common as it should be!

What you wrote is fine. I usually phrase what you wrote more as "I wouldn't want you to catch it"

Yes. It's also common to say things like: * "I'm contagious, so I'm staying home." * "I don't want to spread my germs." * "Please stay away, I'm feeling unwell."

Today -> present continuous

Btw, depending on the context, it might sound more natural to say "so don't come *over* today." This is what I would say if I was talking to a friend who'd been planning to visit me at my house.

Works just fine, but a cleaner sentence would be “I don’t want you to catch anything from me.”

“I don’t want you to catch it” is what we would say.

You’re making three points: 1. I’ve got the flu 2. Don’t come in today 3. I don’t want to give it to you. You can combine these two ways: A. I've got the flu, so don’t come in today. I don’t want to give it to you. B. I’ve got the flu. Don’t come in today, because I don’t want to give it to you. Three short sentences is choppy. One long sentence would be awkward.

Yes, I say it

"I don't want to give it to you"; "I don't want to pass it on"; "I don't want to spread it"; "I don't want you to catch it" These all convey the same sentiment, that the speaker is quarantining themselves for the sake of others.