I lost the sense of smell only the first time I had Covid. What’s curious to me is that that symptom has occurred in me several times before caused by influenza

I lost the sense of smell only the first time I had Covid. What’s curious to me is that that symptom has occurred in me several times before caused by influenza or similar, long before Covid, although not as prolonged (slowly recovering after Covid in about a month). I may be an outlier but I’ve never seen or heard anyone else mention this.