Does poop have DNA?

Online Answer
Absolutely! As Melinda properly explained, cells from the rectum get "rubbed off" during a bowel movement and end up in the feces. Additionally, cells from the colon and small intestine, and anus routinely end up in feces, all of which will contain DNA..
Related Questions 📌
Human waste is used as an agricultural fertilizer in China and elsewhere. Because the eggs of many helminth species can survive in environmental media, reuse of untreated or partially treated human waste, commonly called night soil, may promote transmission of human helminthiases.
Human waste and urine does not deter deer. They seem to be very inquisit with it.

The risk of catching the COVID-19 virus from the faeces of an infected person appears to be low.

There is some evidence that the COVID-19 virus may lead to intestinal infection and be present in faeces. Approximately 2−10% of cases of confirmed COVID-19 disease presented with diarrhoea (2−4), and two studies detected COVID-19 viral RNA fragments in the faecal matter of COVID-19 patients (5,6).

However, to date only one study has cultured the COVID-19 virus from a single stool specimen (7). There have been no reports of faecal−oral transmission of the COVID-19 virus.

It is possible that sewage is used as fertilizer, as it is in many parts of the world although there is no evidence that garlic in China is fertilized in this fashion. In any case, there is no problem with this, human waste is as effective a fertilizer as is animal waste.
One product claims that we have anywhere from six to forty pounds of waste, feces and undigested food stuck in our bodies. Another one compares the weight of the waste to carrying a bowling ball in our gut. Then there are accounts of famous people who died and were found to be full of intestinal sludge.