Appropriate oral hygiene significantly reduces the possibility of oral infections. However, dental caries and periodontal diseases are major oral health issues causing chronic diseases due to poor oral health. Recently, herbal compounds have gained interest in maintaining oral health. Extracts of burdock root (Arctium), noni fruit (Morinda citrifolia), and neem leaf (Azadirachta indica) are now used as intracanal medicaments in endodontics and periodontics. Plectranthus amboinicus species and other plants produces essential oil like β-caryophyllene, p-cymene, and γ-terpinene can exhibit antibacterial activity; highlighting phytoconstituents plays a vital role in oral health. The COVID-19 pandemic highlighted the importance of hygiene and sanitization, to curb SARS-CoV-2. Oral cavity is among the gateways for virus entry into saliva. Saliva is a potential reservoir of SARS-CoV-2, and there is an increased risk of infection if there is any fissure in the mouth. This enables entry of virus into the vascular system through gingival or periodontal pocket, possibly reaching lung periphery then to lung vessels by interacting with endothelial surface receptors triggering pulmonary vasoconstriction and lung damage due to endothelial dysfunction. This review aims to draw attention to the possible route of SARS-CoV-2 infection via the oral cavity and the importance of oral hygiene against COVID-19.