“Ash that settles in homes after a fire can be supercharged by the burned metals, electronics and furniture, creating “toxic ash,” said Rima Habre, an associate professor of environmental health and spatial sciences at the University of Southern California.
“The ash itself contains a lot more toxic chemicals than if it was just a forest burning,” Habre said.”
(will need a WP subscription or search on USC Library for free version with USC login)