You don't need to be smart to know the answer to this question! Farmaceutical companies will make a lot of profit, they are making the profit now. The companies that produce masks will make a profit too. Chinese goods, at least some goods will have a drop, a huge drop.
To make it even more simple, everything and anything connected to protection and curing Corona virus will be very profitable. Everything and anything that's connected with spreading the disease will have a drop!
The corona virus is just too over hype that leads to a misleading information in some other countries that creates a panic that's why there is a lot of mass mask buying yet they don't know what actually the virus is or how it could survive to its host. A proper lesson is required to not to overreacting to the NCoV since there are worst viruses already before who didn't survive that long in the tropical countries.