Keeping trademark symbol in a dataframe column output

I've been trying to use Python and Pandas to take a csv as input, clean the dataset, and assign the output to a new csv file. One of the columns in the original csv has trademark symbols. When I export the new csv, the columns sometimes have ™ instead of just the trademark symbol, or sometimes they're turned into ™. This is how I imported the original csv and exported the new csv:

import pandas as pd df=pd.read_csv("original_df.csv", encoding='latin1',dtype='unicode') 

This is how I exported a new dataframe to csv:

df_new.to_csv('new_test_df.csv', index = False) 

How do I export the string without the extra symbols (i.e. how it was in the original)?

Thanks!