Elastin is an important protein in tissues that need to be elastic to function well, such as alveoli. For example, the breakdown of elastin is a major mechanism

Elastin is an important protein in tissues that need to be elastic to function well, such as alveoli. For example, the breakdown of elastin is a major mechanism for the breathing difficulties suffered by people with emphysema. Which isn't to say that lozenges are likely to cause it - it's still primarily caused by inhaling irritants - just using it to illustrate how something that interferes with elastin production might affect your breathing, even if you aren't inhaling it.