How do common colds transmit?

Last Friday I started showing symptoms of a cold. I went out that night and my question is if I could infect my neighbor from across the street when I walked outside their house definetely over 6 feet distance, suppose he had open windows.

Then I stayed home since I started having more serious symptoms and I would open my windows to clear the air, could I infect him that way across the street?

I am asking because 4 days after my cold - on the following Tuesday I learnt that my neighbor died, he was 92. Although they said it was due to aging I can't stop thinking if I infected him and I am feeling very guilty.

I would appreciate an honest answer.

PS: I was negative to both covid and influenzia.