Answer:
she probably lost interest or there's another person
See correctly, you vision is altered.
Answer:
I believe that is true :)
I don't know, is your dog okay?
Maybe your dog senses that you can smell again and wanted to see for himself :O
Otherwise how did you lose your sense of smell?
If your dog is okay, then give he/she food because maybe they think it is food. Or the other option to to pay more attention because dogs might do that for more attention (play with them more)