@AndyD Your Dad's pergola reminds me of my aunt, who is a master gardener in Washington State (or was -- she's in her 90s now) and has a beautiful trellis filled with the most gorgeous and fragrant pink roses. I commented on it when I last visited her and she shrugged it off, saying that she can't smell them. She had no use for them since she specialized in growing things to eat.
I think I remember that lack of smell can be correlated with dementia. She was exhibiting some signs during that visit.
I agree it's challenging to capture the experience in a photo.