Miller was the second active NFL player to contract COVID-19 in April. The seven-time Pro Bowler also suffers from asthma, which requires him to use an inhaler to train and play.
"I thought about it. ... I thought about all of my family, I took serious consideration and the things that could possibly happen," Miller said. "It's not a 100 percent bubble like basketball, so there are always going to be holes, but I felt like the job the Broncos were doing to keep us safe was enough for me not to opt out."
But with Thursday's opt-out deadline fast approaching, no players of Miller's stature have decided to sit out.
While the pass-rusher is ready to play, he knows just how impactful the coronavirus can be, even for top-tier athletes.
"I did (have trouble), it was hard for me to get my wind back, probably for two or three weeks after the virus,'' Miller said. "During the virus, I lost a lot of weight - everybody is not the same, but for me, I lost my taste and smell, I couldn't really, like, eat, and when you can't taste or smell you kind of lose your appetite. ... It was tough, no doubt about it."
The 31-year-old is entering his 10th season in the NFL. He will be looking to rebound after producing his worst sack (eight) and tackle (46) totals since an injury-shortened 2013 campaign.