There is no direct link between daily steam inhalation with Vicks and contracting black fungus (mucormycosis). Black fungus primarily affects individuals with severely weakened immune systems, such as those with uncontrolled diabetes or on high-dose steroids. While you are not at risk, inhaling steam with Vicks daily is generally not recommended as the camphor and menthol can irritate your airway lining over time. I suggest switching to plain, clean water steam and using it only when you are actually congested. Please ensure your inhaler is cleaned regularly to prevent any bacterial buildup.

Typically, inhaling steam with ingredients like salt, turmeric, or Vicks for five days will not cause a lasting loss of these senses. However, the strong menthol and camphor in Vicks can temporarily overwhelm your nasal passages, masking smells. More importantly, the underlying cold, sinus infection, or viral illness you are treating is the most common culprit behind a temporary loss of taste and smell. This usually improves as your body recovers. Please rest, stay hydrated, and consult a doctor if your symptoms persist or worsen.

It is very common to experience this sensation, and it could be a combination of both factors. Recovering from COVID-19 two weeks ago can leave behind lingering inflammation in your deeper sinus passages, creating a persistent feeling of mucus. Additionally, frequent use of a Vicks inhaler can irritate your nasal passages or cause a rebound effect, altering how you perceive airflow. To help your nasal lining heal, try pausing the inhaler and using a gentle saline nasal spray to keep the area hydrated. This sensation is typically temporary and should improve soon. Please consult a doctor if it persists.

Since your symptoms are persisting despite home remedies, it is possible you are experiencing a prolonged viral infection, allergic rhinitis, or a secondary sinus infection. Avoiding cold air helps prevent irritation, but it won't cure the underlying cause. I suggest consulting a healthcare professional for a proper evaluation. They may recommend options like generic antihistamines or nasal saline sprays to help ease your congestion.

The steam inhalation with Vicks VapoRub likely irritated your throat lining, as strong essential oils can sometimes be harsh on sensitive tissues. Additionally, certain gas medications can contribute to dryness. To help soothe your throat, please stay well-hydrated by sipping warm water or herbal teas. You can use generic throat lozenges containing a mild anesthetic or demulcent to ease the sharp pain, or try warm saltwater gargles. An over-the-counter pain reliever like paracetamol can also help. If the pain persists or worsens, please consult a doctor for an evaluation.

The burning sensation and reduced sense of smell are likely due to the viral infection itself causing inflammation in your nasal passages, rather than the Vicks Action 500, though oral decongestants like phenylephrine can sometimes cause mild dryness. To help soothe your nose, try using a simple saline nasal spray and steam inhalation to restore moisture. This should gradually improve as your body recovers from the cold. However, if these symptoms persist past a week or worsen, please consult a healthcare professional for a gentle evaluation.