We got the Florida Senator Monday at Reagan National Airport, and he called misinformation about soldier deployment an absolute hoax ... most likely the work of Internet trolls.

As you know ... places like San Francisco are putting residents on round-the-clock curfew for the next 3 weeks to stem the virus' spread. While police can arrest people violating curfew, Rubio says that's way different from martial law.

Marco says martial law -- where government control is handed over to army -- just doesn't exist anymore in our country. He says that's not about to change, either.

Sounds like the Senator's had it up to here with "crazy people" on the Internet, and adds even "smart people" have been hitting him up all day worried about martial law.

Bottom line -- Rubio's saying don't believe the hype, in this case. Or the hoax.

BTW, the Senator was much less smooth about this topic on social. Based on the typos, we'd say he's taking Twitter tips from President Trump.