In a meeting on a Monday morning back in my corporate days.
Couple of minutes late, door opens and in walks one of the team.
"Hi Caroline, just started, how are you?" says the manager
"Awful; woke up feeling terrible, kids were a nightmare and the journey in couldn't have been worse"
"Wow, that answer's raised the morale in the room!" said the manager (smiling). "Shall we have another go? ..... Hello Caroline, how are you?"
"Pretty good, thanks, sorry I'm a couple of minutes late"
They are almost certainly unaware that they are doing it. Let them know and they might change their behaviour. Do it with a joke and a smile.