As others have mentioned, I lost most of my sense of smell ten or more years ago with no other symptoms. About three years ago I was diagnosed with PD. Given your circumstances now is the time to be sure you have a good exercise routine, not later when symptoms could creates some limitations. I suggest 5 to 7 days a week you are walking, cycling, jogging, weight lifting, swimming and/or doing yoga. Whatever works for you, just get into the habit. Exercise is one of the best methods to slow the progression. My wife was diagnosed 15 years ago and is still doing well thanks at least partially to regular exercise.

Best wishes, Joe