Mine is not seed-raised. My father found some stem bulbils in 1992.
Look at this:
Same white marking. Every year i have few of them on most of my lilies (mostly asiatics) and every year the flowers, leaves, stems look just fine. I don't think they would be fine after 3 or more years if they have virus. They would be worse each season but in my case i have better lilies with more flowers each year. Also, as i mentioned earlier, hail storm damage make millions of those white markings so i started to believe that those white spots on lilies means some kind of damage to leaves (not virus infection).
The problem that we have here (with your photo):
1. you said you didn't have any hailstorms in recent days/weeks,
2. you have a lot of aphids on your lilies,
3. too much white spots and lines.
I believe those three reasons are enough for you to listen to Rick and eliminate those lilies.
