https://wjla.com/news/local/2-evaluated-after-carbon-monoxide-found-in-dc-apartment-building-officials-say
Crews investigate elevated carbon monoxide levels, exploding manhole near DC apartment
https://twitter.com/TheInsiderPaper/status/1359251881344778247?s=20
so you have man holes in New York and DC exoloding the last two days, I'm sure that's perfectly normal