Plague Doctor costume, from Reddit.
Photograph without attribution.
"Some plague doctors wore a special costume ... (t)he protective suit consisted of a heavy fabric overcoat that was waxed, a mask with glass eye openings and a cone nose shaped like a beak to hold scented substances and straw.
"Some of the scented materials were ambergris, lemon Balm (Melissa officinalis), mint (Mentha spicata L.) leaves, camphor, cloves, laudanum, myrrh, rose petals, storax. This was thought to protect the doctor from miasmatic bad air. The straw provided a filter for the "bad air". A wooden cane pointer was used to help examine the patient without having to touch them. It was also used as a means of repenting sins, as many believed that the plague was a punishment and would ask to be whipped to repent their sins."
"This popular seventeenth century poem describes the plague doctor's costume.
As may be seen on picture here,
In Rome the doctors do appear,
When to their patients they are called,
In places by the plague appalled,
Their hats and cloaks, of fashion new,
Are made of oilcloth, dark of hue,
Their caps with glasses are designed,
Their bills with antidotes all lined,
That foulsome air may do no harm,
Nor cause the doctor man alarm,
The staff in hand must serve to show
Their noble trade where'er they go."