Recently, there have been some very close and fairly violent thunder storms here in Charlotte. The infra from those strikes makes my system seem like headphones.
Infra ill effects result from long exposure to steady state sine waves. Soundtracks are so different it isn't worth discussing here. A decade ago, when I began measuring with a test tone disc and RS meter with correction files, I remember feeling nauseous and dizzy after prolonged 10-20 Hz tones (1/12 octave) from running many, many FR graphs manually.
Like everything else in the world, the human brain's psycho-acoustic cache pulls up the effect quicker and has less affect than the initial reaction. Infra in the home audio environment is a recent phenomenon that most people haven't yet experienced. That puts it in the 'something new and exciting' category. We quickly become inured to it and crave ever more. Witness the 12s turning into 15s, then 18s and recently 21" drivers in singles, then pairs, quads, etc.
I'm under no delusion regarding ill effects from infra on humans. I've experienced them myself. Headache, dizziness, nausea, increased heart rate and blood pressure, et al. It comes from thousands of years of honing our detection capabilities to all of the things that contain infrasonic precursors; violent storms, volcanic activity, earthquakes, advancing armies, hurricanes, tornadoes, tidal waves, shock waves, etc., all of which have potential to snuff humans.
I'm also under no delusion that HT infra has any permanent ill effects or comes anywhere close to the real events because it does neither. This is what makes a "basshead"; that small percentage of humans who want to get as close to the exploding plane crash as possible while remaining intact. There's never enough bass because it will never be an equal copy of the actual event, no matter how much low end capability you have in your listening space.
For perspective, some facts about the eruption of Krakatoa:
The explosions were so violent that they were heard 3,500 km (2,200 mi) away in Perth, Western Australia and the Indian Ocean island of Rodrigues near Mauritius, 4,800 km (3,000 mi) away, where they were thought to be cannonfire from a nearby ship. Each was accompanied by very large tsunamis, which are believed to have been over 30 meters (100 ft) high in places. A large area of the Sunda Strait and a number of places on the Sumatran coast were affected by pyroclastic flows from the volcano. The energy released from the explosion was equal to about 200 Megatons of TNT, roughly 4 times more powerful than the Tsar Bomba, the most powerful thermonuclear weapon ever detonated by man.
The pressure wave generated by the colossal final explosion radiated from Krakatoa at 1,086 km/h (675 mph). It was so powerful that it ruptured the eardrums of sailors on ships in the Sunda Strait and caused a spike of more than two and half inches of mercury (ca 85 hPa) in pressure gauges attached to gasometers in the Jakarta gasworks, sending them off the scale. The pressure wave radiated across the globe and was recorded on barographs all over the world, which continued to register it up to 5 days after the explosion. Barograph recordings show that the shockwave from the final explosion reverberated around the globe 7 times in total. Ash was propelled to a height of 80 km (50 mi).
Now, you can make a movie about Krakatoa that ends up in the 5 star category in the Master List and crank it to insanity through any system you can imagine, but... although my neighbors across the street complained they could hear/feel my subs in their living room, there's no one in California making the same complaint.
Long live the quest for accurate reproduction.