Ceiling and "smallpox" (disease), is there a relationship?

Because the bottom of the roof is easy to accumulate dust, it is not easy to clean, and dust often falls down. Therefore, it is necessary to have a flat, flat roof to support the underside of the roof. Therefore, the ceiling was created as a form of structure.

The ceiling is also known as "dust", the name explains its function.

The skeleton pattern of the ceiling in addition to square or rectangular. There are also hexagonal, octagonal and other grids.

In ancient times, the orientation is divided into east, south, west, north, heaven, earth, in the sky orientation of the flat roof in addition to functionality, usually attached to a variety of beautiful floral pattern decorations, so it is called the ceiling.

This is the general interpretation of the decorative field,

I just looked in the Baidu Q&A, and found that most of them are copied a statement: the board decorated like a long ceiling, so called smallpox. This kind of statement I personally think is inappropriate, this smallpox should have nothing to do with the smallpox virus.

References:

Ancient Decoration