An NIH study from last year found that nearly 90% of masks carry potential cancer-causing compounds.

Every sample also contained phthalates—harmful synthetic chemicals proven to cause infertility, breast cancer, abnormal reproductive system development, neurological disorders, ADHD, autism spectrum disorders, and Type II diabetes.

Researchers estimate the Estimated Daily Intake (EDI) of phthalates among toddlers due to masks to be 4-5 times higher than that among adults.