What episode is my human fireworks epidemic?

The fifth episode. According to the plot of "My Fireworks", in the fifth episode of the drama, the test result of the car accident victim was positive for human papillomavirus, and Xu Qin suddenly became wary, thinking of Song Yan's injury when saving people, he was even more worried. After getting the news, Song Yan also asked the team members involved in the rescue to go to the hospital for blood tests.