A man wears a gas mask as he holds a bouquet of flowers, following the outbreak of the novel coronavirus on Valentine’s Day in Hong Kong, China February 14, 2020.

A customer picks up a flower bouquet delivered by the florist Mulan Blossom's staff Tingshu Li at the lobby of an apartment building on Valentine's Day, following an outbreak of the novel coronavirus in the country, in Beijing, China February 14, 2020.

A couple wearing face masks are seen inside a cafe, following an outbreak of the novel coronavirus in the country, on Valentine's Day at the Sanlitun shopping area in Beijing, China February 14, 2020.

Florist Zhen Zhen (L) and the shop owner Jiankun Song prepare flower bouquets to deliver on Valentine's Day, following an outbreak of the novel coronavirus in the country, at the Mulan Blossom flower shop in the central business area in Beijing, China February 14, 2020.

Wang, 32, and his wife Shi, 30, wearing masks look at a necklace at a shopping mall on Valentine's Day in Shanghai, China, as the country is hit by an outbreak of the novel coronavirus, February 14, 2020.

A man wearing a face mask takes a selfie in front of hearts celebrating Valentine's Day in front of shopping mall in Bangkok, Thailand February 13, 2020. Picture taken February 13, 2020.

Jia, 29, and his wife Su, 28, wearing masks take impression of fingerprints at a registration session at a marriage registry office on Valentine's Day in Shanghai, China, as the country is hit by an outbreak of the novel coronavirus, February 14, 2020.

Pedestrians wearing face masks walk under an umbrella amid snowfall following an outbreak of the novel coronavirus in the country, on Valentine's Day at a shopping area in Beijing, China February 14, 2020.

A couple celebrate Valentine's Day as they wear face masks in precaution of the coronavirus outbreak at Orchard Road in Singapore February 14, 2020.

A girl arrives to a school wearing a protective face mask on Valentine's Day in Ayutthaya, outside Bangkok, Thailand February 14, 2020.

Shi, 30, feeds her husband Wang, 32, at an ice cream shop on Valentine's Day in Shanghai, China, as the country is hit by an outbreak of the novel coronavirus, February 14, 2020.

A couple wears masks to protect against an outbreak of a coronavirus as they ride on a carnival on Valentine’s Day in Hong Kong, China February 14, 2020.

A couple celebrate Valentine's Day as they wear face masks in precaution of the coronavirus outbreak at Orchard Road in Singapore February 14, 2020.

Women wearing protective masks poses in front of hearts celebrating Valentine's Day in front of shopping mall in Bangkok, Thailand February 13, 2020.

Wang, 32, and his wife Shi, 30, pose for a selfie as Wang holds their marriage certificates at a marriage registry office on Valentine's Day in Shanghai, China, as the country is hit by an outbreak of the novel coronavirus, February 14, 2020.

A couple celebrate Valentine's Day as they wear face masks in precaution of the coronavirus outbreak at Orchard Road in Singapore February 14, 2020.

A man wears a gas mask as he holds a bouquet of flowers, following the outbreak of the novel coronavirus on Valentine’s Day in Hong Kong, China February 14, 2020.

A couple poses with face masks and marriage certificates amid snow outside a registry of marriage on Valentine's Day, as the country is hit by an outbreak of the novel coronavirus, in Beijing, China February 14, 2020. China Daily via REUTERS.

Wang, 32, and his wife Shi, 30, wearing masks walk on a street on Valentine's Day in Shanghai, China, as the country is hit by an outbreak of the novel coronavirus, February 14, 2020.

Couples wearing masks are seen at a registration session at a marriage registry office on Valentine's Day in Shanghai, China, as the country is hit by an outbreak of the novel coronavirus, February 14, 2020.

A couple wearing face masks walks at the Sanlitun shopping area amid snowfall, following an outbreak of the novel coronavirus in the country, on Valentine's Day in Beijing, China February 14, 2020.

Staff members spray disinfectant on packs with flower bouquets to be delivered on Valentine's Day following an outbreak of the novel coronavirus in the country, at the Mulan Blossom flower shop in the central business area in Beijing, China February 14, 2020.