Mystery liquid falls from sky in USA

People in one Eastern Las Vegas neighborhood near Hollywood
Blvd. and Charleston Ave. have been completely perplexed for
weeks as mysterious brown or black droplets have fallen on their
properties.
Marcos Cervantes said the droplets have rained on his home, cars,
RV, basketball course, and just about everything else for the last
three to four weeks (https://bit.ly/3gFuGV2).
“It could be grease? Oil? I don’t know,” Cervantes said while looking
at the hood of his mystery liquid coated SUV. “It’s very hard to
maintain my vehicles. It’s very very difficult to be outside in my
backyard knowing that I can’t even cook or barbecue or anything like
that because of droplets on my food.”
Neighbors in the area declined an interview, but said they’ve all
experienced the same thing with no explanation.
Cervantes questioned whether the droplets could have come from
planes passing overhead, but he said contacting the Federal Aviation
Administration yielded no answers.
He wondered whether the substance could be toxic or harmful to his
health.
“I would like somebody to take action and help me determine what this
is and help find a solution,” he said. (https://youtu.be/TGHZy5dJvdo)