Essendon's Conor McKenna was mocked on his return to the field after he tested positive to COVID-19.
North Melbourne defender Luke McDonald covered his mouth and turned away from McKenna during a melee in last night's encounter.
McKenna returned to the field for the first time since completing a two-week quarantine for testing positive to COVID-19.
The 24-year-old collected 18 disposals in Essendon's 14-point win over North Melbourne.