Using stainless steel on ear posts will not contaminate your pickle.
I have found Sterling Silver is a dirty metal especially going thru
the ear. I have used a number of ear ring post over the years from
white and yellow gold — platinum – titanium – surgical stainless
steel – on sterling silver ear rings depending what the customer
tells me about her allergies.
Most customers do know their ears. My posts of choice is the Sparkie
post from Rio Grande with the fusion nib disc on it. I grind the nib
off — tin the disc which keeps the solder from touching the ear and
I have used this technique on dozens of different style ear rings
with 99% success.