The first thing to separate is mucus from smoking versus CHS (cannabinoid hyperemesis syndrome). They can occur in the same cannabis user, but they are different problems.
I'd be cautious about claiming that steam literally "breaks the bonds" of mucus. It mainly provides moisture and symptomatic relief.
For an otherwise healthy adult, an OTC expectorant containing guaifenesin can sometimes make mucus easier to cough up. Follow the package directions and check with a pharmacist/doctor if you have other medical conditions or take multiple medications.
The strongest intervention isn't a particular medication — it's stopping cannabis. Cannabis cessation is consistently identified as the definitive/most successful treatment, and symptoms can recur when cannabis is restarted.
Doctors sometimes use medications such as haloperidol or droperidol, and benzodiazepines in selected circumstances, but these aren't medications to self-prescribe. Evidence for many CHS medications remains limited.
Meditation won't remove mucus or cure CHS, but it can help with the urge/craving → smoking → symptoms → smoking again cycle. Try this when the urge to smoke hits:
For someone trying to quit, make the goal "delay 20 minutes", rather than telling yourself you can never use cannabis again. Repeating that delay can make cessation considerably more manageable.
If someone is vomiting repeatedly, can't keep fluids down, has very little/dark urine, severe abdominal or chest pain, fainting/confusion, blood in vomit, significant trouble breathing, or severe weakness, don't treat it as a home-remedy problem — get urgent medical attention. CHS can cause serious dehydration and kidney injury.
If you're considering Heartaide specifically as a mucus/CHS product, I would not assume its claims are medically established just because it is marketed for cannabis users. If you send the Heartaide product label, ingredients, or website, every ingredient can be broken down — what actually has evidence for mucus/CHS, what is unnecessary, and what could potentially interact with medications.