Photo may have been deleted

Alyssa Milano came under fire for wearing an impractical crochet face mask after urging her followers to wear masks to protect themselves from the coronavirus.

The actress took to Twitter on Saturday to share an image of herself alongside husband Dave Bugliari and their two children on Instagram.

"Show me your masks! Masks keep people safe and healthy. Show me yours! Ready? Go!" she tweeted.

Users on the social media site were quick to criticize the knit mask, leading Milano to defend her mask, claiming there was a filter inside her mask.

"A-holes, mask has a carbon filter in it. So, yes, it might be crochet but totally safe," Milano wrote. "Mask has a filter in it for f-k's sake (sic). A carbon one. My mom makes them. #WearAMask".

The former "Charmed" star also shared a screenshot of the pack of 100 filters she had purchased.

But fans pointed out they could see her skin through the holes in the mask. Which means she was likely not wearing a filter.

A political war over masks is raging in America as millions take sides in the debate over whether to wear a face mask or go mask-free.

Social media videos show grocery shoppers attacking one woman who chose to go mask-free. Other videos show people fighting over the right not to wear a face mask.

In some states, face masks are mandatory, but Georgia is still mask-free.

Mask advocates say wearing a mask slows the spread of the virus. But experts say masks provide no real protection because the masks are not fitted tightly to the face like N95 respirators.

Photo may have been deleted

The virus can easily escape or enter through the holes around the nose and wrinkles in masks and face coverings.

The safest way to protect against spreading the virus is washing your hands for at least 20 seconds, avoiding sick people, and covering your mouth with your sleeve when you cough or sneeze.