I have a cough and keep waking up my 4MO

I need some help here from other parents who have been in this situation.

I have a really bad tickle cough that I am trying extremely hard to stop myself overnight with the baby. Drinking small sips of water etc but this is keeping me up all night as I'm concentrating so hard on not coughing. I'm also not always succeeding on suppressing the cough and its waking the sleeping baby.

I don't have the luxury of sleeping in a different room than the baby so it's not an option for me.

Has anyone else been in this situation and can provide anecdotes for how you managed? Google has been useless and just keeps giving me results for a coughing baby, not a coughing mum!