(Strip Number 6693, Original Publication Date, 31 August 1986)
Panel 1: We start things off with Elly returning from a walk outside and batting away a mosquito.
Panel 2: As she gets ready for bed, said insect has followed her into the washroom.
Panel 3: As she gets into bed and turns out the light, she tells John that she can't believe how bad the bugs were outside that evening.
Panel 4: As he gets an amorous look in his eyes, she complains about how she went for a walk and the mosquitoes were just awful.
Panel 5: She yawns, not noticing that he's about to kiss her.
Panel 6: He does kiss her.
Panel 7: He then goes goggle-eyed and spits out something awful tasting.
Panel 8: He turns away from her and coughs into the back of his hand.
Panel 9: As he scowls in disgust, she does allow as how well today's insect repellents work.
Summary: In the real world, John would probably have to call poison control and await instructions. Here, it's funny because he's compared to a mosquito that needs to be repelled.