We all know how bad smoking is for you, but this simulation really hammers it home.
Ignorance is bliss to a lot of people, so as we can't actually see the internal damage sparking up is inflicting, it's easy to put it to the back of your mind.
According to the NHS, a lot of folks 'may not realise just how far-reaching its damage can be' - as it's not just a hacking cough that you're risking.
As well as causing heart disease and a variety of cancers, smoking can impact our senses and even our brains.
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Health boffins in the UK explain that the habit 'increases the risk of hearing loss and eye problems like cataracts, glaucoma, dry eyes, and vision damage' as you get older.
On top of that, it damages blood vessels, which the UK Alzheimer’s Society says increases the risk of Alzheimer’s disease and vascular dementia.
Due to all the nasty chemicals in cigarettes, your body's cells also take a hit and you're likely to be prone to inflammation, too - which can worsen joint pain and damage.
The NHS explains that smoking can also result in issues like heartburn, ulcers, liver problems, and a higher risk of Crohn’s disease, pancreatitis, and gallstones, while also raising your blood pressure.
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But if those warnings still haven't persuaded you to put your packet of cigs in the bin, maybe this simulation will.
Content creator Chris Notap shared a video on YouTube in 2017 of an amateur experiment he carried out to show how smoking 'wrecks your lungs'.
He explained that he intended to depict how much damage smoking a pack of cigarettes for 30 days straight - which equates to 600 individual ones - could have on you.
Notap - who boasts more than one million subscribers - used a bell jar filled with white cotton wool balls to represent our lungs.
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It had a hole in the front where he could position the cigarettes and the smoke exits this via an 'exhale tube', which was a clear pipe that the social media star said symbolises our throat.
He then continuously fed the 600 cigarettes into the hole, sparking them up as a regular smoker would.
The white cotton wool balls quickly became yellowed - and by the time he got through 15 packs of cigarettes, you could barely see inside of it because of the thick tar.
As you can imagine, after he got through the entirety of his cigarette supply, the bell jar was completely blackened - while the exhale tube was clogged up to the nines with black tar too.
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Explaining his experiment, Notap said: "The simplicity of the white cotton balls visually shows what is possibly going in your lungs and what your body has to deal with.
"The chamber was cleared of smoke between each and every cigarette allowing air to enter. The smoke was drawn through and around the cotton, catching some and not all of the junk and tar.
"This is evident by the accumulation in the hoses. Each cigarette was smoked 3/4 of the way to reflect real world smoking allowing a quarter of it to just burn away while talking or thinking."
He revealed that he filmed the video over the course of three days and was left stunned by the 'visual change in [the] colour' of the cotton balls.
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"The smell inside the dome at the end was vile," Notap added. "After shooting 3 days of video I felt quite ill afterwards. Can't imagine how a smoker feels on a daily basis."
He's a firm believer that 'your lungs were only meant for one thing and that's air' - and he hopes that his smoking simulation will remind other people of that.
Olivia Burke