Keyword combinations included “viral pneumonia,” “Traditional Chinese Medicine,” “natural products,” “inflammation,” and “oxidative stress,” in addition to mechanism-related terms such as “NF-κB,” “Nrf2,” “PI3K/Akt,” “MAPK,” and “NLRP3 inflammasome.” Natural compounds acting on these pathways have been shown to suppress cytokine storms, reduce reactive oxygen species accumulation, preserve alveolar epithelial integrity, and alleviate pulmonary inflammation. This evidence concerns the gene NFE2L2 and viral pneumonia.